N-alpha mercapto acetyl amino aryl compounds



Patented Aug. 19, i952 s; PATENT oFFlcE Y N-AIrHAMERcAPro ACETYL AMINO ARYL u I COMPOUNDS ,7 Ulrich Weiss, Kew Gardens, N. Y., assignor to- Endo. Products, Inc., Richmond Hill, N. Y., a' corporation of New York No Drawing.

wherein zfilt; thesubstituent for hydrogen, is a member'of the group consisting of alkyl, aryl,

aralkyl R thesubstituent for hydrogen, i a'member of the group consisting of alkoxy, aryloxy, nitro and'halo; 1

R the 'substituent for hydrogen, is aryl; JY- representsone atom of a monovalent, or one equivalent of a polyvalent heavy metal;

i .The'subscript m is a member of the series to inclusive; I

.1 Thesubscript n is a member of the series 0 to 1 inclusive; and wherein the compound contains at least one of the substituents designated by the symbols-R',R R or-the group (NH.CO.CH2.S). These metal mercaptides may be prepared from their parent thiol compounds having the type rmul wherein the symbols Bl, R and R and the subscripts m and n have the same meaning as above described, and the parent thiol contains at least 'one..o1'.thesubstituents designated by the symbols R,;R R? and the group (NH.CO.CH2.SH).

' ;;'I,'he chemically reactive mercapto structure of theioregoingythiol compounds allowed for the preparation of:. 1 1(a) yMercaptidesv of various metals, as for example, those of silver, mercury,gold,.iron,.nickel Application December 18, 1947, Serial No. 792,626

5 Claims (01. 2 0-430) tioned in sub-paragraph ((1) supra, in combination with each other. or with either the parent mercapto compounds or their derivatives as indicated in sub-paragraph (1)) supra.

Accordingly, among the purposes and objectsof this invention may be noted the provision of a series of new metal mercaptides of the type forniulai above indicated.

Among the specific applications of these metal mercaptides it is to be noted that the silver compounds are antiseptics that the auro compounds are valuable in the treatment of arthritis; and that the iron, copper and cobalt compounds are valuable for their influence on the hematopoietic system. 1. Furthermore, it is to be noted that the parent mercapto. compounds possess the property of modifying proteinaceous materials by altering the .characterthereof so as to make them adaptable for further chemical treatment or physical ma-- nipulation. Additionally, the" mercapto compounds are-of value as anti-oxidants in protecting such compounds as epinephrine,- vitamin A and other products which are prone to undergo oxida-- tion in the presence of air or oxygen. 7

. The-mercapto compounds and. their derivatives may also be useful as detoxicants for heavy metals in the manner akin tothat of sulfhydryl compounds. --For this purpose they may be used in compositions in whichthey are the only active ingredient or in compositions such as are encom-x passed by those of sub-paragraph (0) supra.

The-parent mercapto compounds may convenientlybe prepared by the interaction of thiocyano acetic acid witha selected aromatic amine,.name- 1y, one having the particularly'desire'd substituent or substituents.- This inter-action: is brought about by the dissolution'of the selected amine in an'acid medium, followed by the addition thereto.

ofithe, sodium salt of thiocyano acetic acid, with theresultant formation of'the S-carbamylderivative of "the desired N-arylamide of.mercap,to acetic. acid." These S-carbamyl compounds'may in turn beiconverted into the desired mercapto 7 compounds by means of heat or alkali, preferably hotiidilute ammonia. The. mercapto compounds. are "converted to. the corresponding. metal mer.-

captides by inter actionwith an appropriate reagent. The" mercapto compounds may also be: converted. into their. corresponding; disulfides by the: action'. of oxidizing agents, as for I example, iodine. I f Ti; 5.1 F i accordingly,comprises proce This invention dures and features 'of the various compositions andtcompounds which will beltypifiedby those'set forth in the following examples and the scope of which will be indicated in the appended claims.

Example 1 N-alpha auro mercapto acetyl N-methyl aniline having the formula:

lo I ide; .fThe dried product is a yellow powder which i worrtooomsnu A solution of 0.01 mole of potassium auri'bromide, KAuBr.4, in 95% ethanol, is treated with To the resulting solution, consulfur dioxide.

1 mixture of 15 cc. of water and 15 cc. of concentrated ammonia. After minutes, the solution is filtered by suction into a flask containing excess ice. To this filtrate there is immediately added the cuprous solution described above, and the desired cuprous mercaptide having the above formula, comes down a yellow amorphousprecipitate. It is filtered with suction, washed well with dilute ammonia, followed by water, and

finally dried in vacuo over phosphorus pentox- "is'ver y soluble in chloroform.

taining gold in the monovalent state, there I Estai'npleZ I 4 V (a) N-alpha auro mercapto acetyl ortho toluidine having the formula:

I CH2 I IH-ooomsliu I Asolution of 0.01 mole of potassium auri bromide in 95% ethanol is treated with sulfur dioxide as-describedin Example 1- and t the resultant solution containing the gold in the monovalent state there is added an alcoholic solution of 183 grams of N alphamercapto acetyl ortho toluidine. The gold mercaptide having the above formula appears as a whitishprecipitate. The mixture is diluted with water and the mercaptidecollected on a-filter', washed, and subsequently-dried in accordance with the procedure described in Example 1. V r

By like procedures, using N-alpha mercapto acetyl meta toluidine and vN-alpha mercapto acetyl para toluidine. as the respective starting materials, there are obtained:

N alpha auro mercapto'acetyl meta toluidine,

'N alpha'auro mercapto acetyl'para'toluidinei (bl The N-alpha cupro mercaptoacetyl ortho toluidine havingthe-formula V v o=crr .c6Hi.NH.oo.cH2;s.cu

is prepared as follows. A solution of monovalent copper prepared following essentially the method of Ilosvay' von Nagy-Ilosva '(Berichte 32, 2698 (1899) ),'cf. Houben, Die Methoden def Qrganischen Chemie, 3d edition, 1925, vol. 2, p. 1027. 0.02 mole (4.99 grams) of 'cupric sulfate, CuSO4.5HzO, is dissolved in 20 cc. of .water.,...'15 cc. of concentrated" ammonia is added thereto, followed by the addition of "grar'ns of hydroxyl-: aminehydrochloride. The mixture 'is shaken rapidly. Iteffervesces, and the deep blue liquid turns colorlessor faintly blue within a shortv time.

" 0.02mole (4.5"gra'ms) -'of the 'N-alpha carbamyl A cuprous solution is also prepared from cupric sulfate by reduction with sodium bisulfite in aque- "ous solution containing sodium chloride. To the cuprous solution thus formed, there is added an ,alcoholidsolution' of N-alpha mercapto acetyl ortho toluidine, oCHs.CsH4.NI-I.CO.CHzSH,

whereby the cuprous mercaptide is precipitated.

and worked up as described above.

(0) The mercuric mercaptide of N-alpha mercapto acetyl ortho toluidine having the formula is prepared follows:

A solution of 0.01 mole (2.72 grams) of mercuric chloride, HgClz, in 20 cc.ofethano1, is added to a solution of 0.02 mole (3.64grams) of N- alpha-mercaptoacetyl o toluidiiie, the product of (a) supra, in cc. of ethanol. The white precipitate of the desired mercaptide was filtered by suction, washed with water and ethanol, and dried invacuo over phosphorus pentox-ide.

(d) The fni'ckelous of N-alpha mercapto acetyl para toluidine havingthe formula I is prepared as follows: 0.01 mole (2.91 grains) of nickel nitrate, Ni(No3)2.6H2O," is dissolved? in 30 ccwof ethanol, and added to adsolution'of 002 mole (3.62 grams) of .theparent. thiolcompound dissolved in cc. of ethanol. =.To the resulting brown solution there is added 5 cc. of a mixture (1:1) of, concentrated ammonia and water. The resulting brown precipitate is filtered with sue tion, washed well withwater an'dalcohol, and dried in vacuo over phosphorus'pentoxide.

sam les N-alpha auro mercapto acetyl-3,4-di-fii'etliyl aniline having the formula:

' (a) 0.1 mole of 3 ,'4'-di='methyl' aniline wlsymmetrical ortho 'xylidir'ie) is suspended in 100-200 cc. of water at rom temperature anaenocgn hy drochlorio'acid (1:-1)' is "adde'd' 't'o 'give "a clear solution. Then a so'lutioh of'0i'mole 15. 7 gramsi of sodium thiocyano acetate is added. Crystal l-ization of the :N carBam'yI mercapto seem-a4- di m'ethyl aniline; 1 l V T .fiti -iaipiiafsurdj ereapto; as,

is allowed to proceed for about two days at room temperature, after which time the compound is filtered by suction, washed well with dilute hydrochloric acid and water, anddried. The compound may be recrystallized, if desired, from methanol containing a small quantity of hydrochloric acid.

(b) grams of the product of ((1) supra are refluxed for a few minutes with 60 cc. of a mixture of equal volumes of water and concentrated ammonia. The liquid is filtered at once with suction into a flask containing excess ice. The filtrate is acidified immediately with dilute hydrochloric acid. The desired mercapto compound nrwoocmsnappears as a white precipitate which is collected on a Buchner funnel and washed well with water containing a small amount of hydrochloric acid;

by the addition, to its alcoholic solution, of a very slight excess of aqueous iodine solution (iodine in potassium iodide). The excess iodine is removed at once by the addition of an aqueous solution of sodium thiosulfate, and the disulfide is precipitated by the addition of water.. It is recrystallized from ethanol or glacial acetic acid.

(e) The N-alpha cupro mercapto acetyl-3,4- dimethyl aniline having the formula,

is prepared as follows: 0.03 mole; (5.85 grams) of the parent thiol compound,.the product of (b) supra, is dissolved in 100 cc'. of ethanol solution to which is added a solution of 0.01 'mole (1.70 grams')'-of cupric chloride (CuClz.2HzO) in'10cc. of ethanol. A yellow precipitate is formed consisting of a mixture of the above cuprous mercaptide and 1 molar equivalent of the disulfide, the product of (d) supra. The precipitate is allowed to stand overnight in the refrigerator. It is then filtered with suction, washedwell :with ethanol, and extracted four times with boiling acetone to remove the" last 'trac'esofthe disulfider "The cuprous'mercaptide is dried in vacuo over phos-;

phorus pentoxide. It is a greenishyellow powder. sampler.

reassess CH3 CH8 (a) The N-alpha carbamyl mercapto acetyl- 2,6 di-methyl aniline having the formula on: OH:

is prepared in accordance with the general method described in Example 3(a) except that 2,6-di-methyl aniline (vicm-xylidine). is used as the initial starting material for inter-action with the sodium thiocyano acetate.

(b) In accordance with the general procedure described in Example 302) the carbamyl compound of this Example (a) supra is converted into the N-alpha mercapto acetyl 2,6-di-methyl aniline having the formula CH3 CH ED T-C O. CH2S 2 (-e) The N-alpha argento mercapto acetyl-6,6- dimethyl aniline having the formula (CI-Ia)z.CsI-Ia.Nl-I.CO.CI-Iz.S.Ag

is prepared as follows: 0.01 mole (1.95 grams) of the parent thiol compound, the product of (b) supra, is dissolved in 109 cc. of ethanol and to the solution there is added a'solution of 0.01 mole protecting it from light as much as possible, after which ,it is dried. in vacuo over phosphorus pentoxide.

Example 5 N-alpha auro mercapto acetyl amino mesitylene (N-alpha auro mercapto acetyl 2,4,6 trimethyl. aniline) having the formula 0111- Clix I acumen (la) The N-alpha carbamyl mercapto acetyl- 2,4,6-trimethy1 aniline having the formula CH3 CH3 HI LC O.CH2.SH

(c) In accordance with'the procedure described in Example 3(0) the mercapto compound, the product of (b) supra','is converted into the N- alp'ha auro mercapto cacetyl --.2,-4,6 trimethyl aniline. r c

.(d) ln accordance with the procedure described in Example 3 (d) the mercapto compoundof vthis example, the producing of (b) supra, is converted into ,the corresponding di-sulfide "having the formula 111 100CHaSw- 2 I Example. 6

N -alpha auro mercapto acetyl vpseudo cumidine (N='alpha" awe-mercapto acetyl 2,4,5 trimethyl aniline) havin'g'the'formula a-soluti'on containing gold in'thermonovalent statezasmreparedt in 'accordance with Example 1,

there is added: an alcoholicsolution of 2.12 grams 'oi iNvalpha auro mercapto ac'etyl 2,4,5 -=:tri-

methyl aniline having the formula CsH2(CI-Is )a.NH.CO.CI-I2.SH

The; gold imercaptidechaving the :formula above indicated appears as a 'whitishrprecipitate. 'Thi's mercaptide may be collected, washed, and subsequently dried in vacuo over phosphorus pentoxide as described in Example 1.

Example 7 N-alpha auro mercaptoacetyl N-ethyl aniline having the formula (a) The N-alpha carbamyl mercapto-'acetyl' N-*ethy1* aniline having'the formula is prepared in accordance with the general method described in Example*3(a) except that N-ethyl aniline is used as? the initial starting material for inter-action with the sodium thiocyano acetate.

(b) In accordance with the'general' procedure described in Example 302) thecarbamyl compound of this'Example w(a)"supra,' is converted intoithe N -alpha mercapto acetyl N-ethylJaniline having the formula (0,115) .o o. CH2.SH

"(c)""'In accordance with the procedure described in Example 3(0), 'the mercapto com pound',the product of (12) supra, ls-converted into the N-alpha auro mercapto acetyl-N-ethyl aniline. (d) In accordance with the procedure dc-- scribed in Example 3(d) the mercapto compound of this example, the product of (b) supra, is converted into the corresponding disulflde having the formula .li nicgmycoioms '2 Example v8 "ill-falphaiauro mercapto zacetyl N-ethyl ortho. tolui'dinezhaving-theformula n, V

ar The-'N- alpha came-rink mercapto acetic; N-ethyl ortho toluidine having. the formula r baie ih 'a p maime'wah the 1 general;

Neeflirl rthpluid is fl e riha was; starting material for inter-action with thesodium thiocyano acetaztei .,b maccn de ce w hes ne a precc pound of this examplefthe product bf "(aJ is' converted into the N-alpha mercapto acetyl *N-ethyl ortho-toluidine having the-formula twsteolem a (c) In accordance with the procedure described in Example3(c), the mercapto. compound, the product of (1:) supra, is converted into the N- alpha auro mercapto acetyl N-ethyl ortho toluidine. V

(d) In accordance with the procedure described in Example 3 (d) the mercapto compound 7 of this example, the product of (1)) supra, is converted into the corresponding disulfide having the formula g m m l I(CzH5).CO. CHzS 2 I m By like procedures, using the N-ethyl meta toluidine and theN-ethyl para toluidine as the respective starting materials, there are obtained:

N-alpha carbamyl mercapto acetyl N-ethyl meta toluidine having the formula N-alpha mercapto acetyl N-ethyl'meta toluidine.'

N-alpha auro mercapto acetyl N-ethyl 'meta toluidine.

N-alpha di-thio di-acetyl bis N-ethyl meta toluidine.

N-alpha carbamyl mercapto acetyl N-ethyl para toluidine having the formula N-alpha mercapto acetyl N-ethyl para toluidine.-

N-alpha auro mercapto acetyl N-ethyl para toluidine.

N-alpha di-thio di-acetyl bis- -N-ethy1 para toluidine. v

Example 9 N-alpha auro mercapto acetyl N-methyl ortho ethyl amino benzene having the formula "I MCHaLC 0.012. s In r V (a) The N- alpha carbamyl mercapto" acetyl N-methyl orthdethyl amino benzene having'the formula N(CHa).CO.CHz-S.CO.NH

2 s v V l uomyoopmsn 1 (e) In accordance with the. procedure described in Example 3(0),: the mercapto compound, the product of- (b) supra, is converted into the N-alpha auro mercapto acetyl N-methyl ortho ethyl amino benzene.

(d) In accordance with theprocedure described in Example 3 (d) ,the mercapto compound of this example, the product of (1)) supra, is con verted into the corresponding disulfide having the formula l uomxcocm-s- 2 By like procedures, using the N-methyl meta ethyl amino benzene and the N-methyl para ethyl amino benzene as" the respective starting materials, there are obtained:

N-alpha. carbamyl mercapto acetyl N-methyl meta ethyl amino benzene having the formula 1 N 0Ha).c0;oH2.s.co.NHz- N alpha mercapto acetyl N-methyl meta ethyl amino benzene.

N-alpha auro mercapto acetyl N-methyl meta ethyl amino benzene.

N-alpha di-thio di-acetyl bis N-methyl meta ethyl amino benzene.

N-alpha carbamyl mercapto acetyl N-methyl para ethyl amino benzene having the formula (llz a I\LY(CH3).CO.CH2.S.CO.NH2 N-alpha mercapto acetyl N-methyl para ethyl amino benzene.

N-alpha auro mercapto ethyl amino benzene.

N-alpha di-thio di-acetyl bis N-methyl para ethyl amino benzene.

Example 10 N-alpha 'auro mercapto acetyl N-benzyl aniline having the formula acetyl N-methyl I para I (miiulmoleiof N benzyl aniline is" dissolved at room temperaturein a.:smal 1 amountliof; glacial acetic acidi-and n raqueousnsolution of? 0.1 mole 151.7 g'r'ams)"=of sodiumithiocyano acetat'ea-isialdded thereto. Water isthen-addedatot thezmixture:so

as to' dilute zthe same: to :the minimum: concentra- -tion= ofiacetieacidiwhi'chholdsithebenzylaniline in psolution; Crystallization.-.-of the. Nealpha carbamyl mercaptos acetyl Ni-benzyl Zaniline have 'ing the formulau s 'start's'at room temperatureonly after one totwo 'weeksi- Itis allowed to proceed-for several weeks, after which time" the productis' filtered by 'suctio'n washed withdilute acetic acid, folloWed' -by Water, and dried in vacuo over phosphorus pentexi'de'.- It is purifiedby recrystallization from ethanol-containing a -few' drops of hydrochloric acids (5) In accordance With-thegeneral procedure described in Example 3(b), the carbamyl compound of this example, the product? of (a) supra, is converted into the N-alpha mercapto acetyl N- benzyl aniline having the formula 1 Example 11 N-alpha auro mercapto acetyl ortho amino biphenyl having the formula I 1H.CO.CH iS.Au

(a) The N-alpha carbamylsjmercaptm-acetyl ortho. amino biphenyl .-having the;v formula- 7 is prepared in accordance with; the general method described in Example 10(a) except that ortho amino biphenyl is used as the initial starting material for inter-action with the sodium thiocyano acetate;v Crystallizationpf this car- 15 'bamyl mercapto cdmpoundiizommenceszwitl'fin a shortztimeand is allowed toproceedto completion for about two days at room temperature.

(17) In accordance with the-1 procedure described in Example 1-0 (h), thetcarbamyl compound of this Example, theproduct of (a) supra, is converted into the N-alpha mercapto acetyl ortho amino bipheny-l having the formula (c) In accordance with the procedure-elder scribed in Example 10(0), the mercapto compound, the product of (b) supra, is converted into the N-alpha auro mercapto acetyl ortho amino biphenyl.

(d) In accordance with the procedure described in Example 1,0:(d), the mercapto compound. otthis example, ,the pr 0duct. of (b).- supra,

is Iconvertedfinto' thecorresriondin disulfide hay.- ingmthehformula.

i nicocms-f 2 By like procedures, using para amino biphenyl and meta aminorbiphenyhasrthe; respective startin imaterialshthere arev obtained... 1

N-alpha carbamyl mercapto acetyl para amino loiphenyl havin athe. formula N-alpha mercapto acetyl para amino biphenyl.

N-alpha aurdmercapto acetyl-para amino biph e N-alpha di-thio di-acetyl bis para aminmbi;

ph n i I i N-alpha carbamyl mercapto acetyl meta-gaming biphenyl having-;the;formula. Y p

l NH.C 0.0Ha.S.CO.NH2

N-alpha mercapto acetyl meta amino biphenyl.

N-alpha auro mercapto, acetyl meta amino biphenyl.

N-alpha di-thio; diracetyl -biszmeta amino bi- .phenyh I a (e). The Ngalpha cupro. mercapto acetyl, ortho amino 'biphenylhaving the formula ILIHLQQ- CHLS. Cu

is prepared fromtheparent'thio compound, the product'of (1)) supra; by the interaction with cupric chloride in ethanol in accordance with the method described in Example 3(e). The

product is a greenish yellow powder comparatively soluble in ethanol. I

' v I mmpzeiz N-alpha auro mercapto acetyl'm'eta nitraniline having the formula I l i H.CO.CH2.S.Au

(a) The N alpha 'carbamyl mercapto. acetyl meta nitraniline having the formula r nroocmsn (c) In accordance with the procdure described in Example 11(c), the mercapto compound, the productof .(b) supra, isconverted into the N- alphaaur'o "mercaptoI acetyl meta nitraniline.

The product is a 'yellow powder.

(d) In accordance with the procedure described in Example 11'(d), the mercapto compound of this example, the product of (b supra,

is converted into the corresponding disulfide having the formula v 1 r nroopms 2 Example 13 V N -alpha auro mercapto acetyl para nitranillne having the formula v 7 1 TH.C0.CH.S.Au v (a) The N-alpha carbamyl mercapto acetyl para nitraniline having the formula mrpocmsconnl N-alph'a mile mercapto prepared in accordance with the general method described in Example 3(a), except that para nitraniline is used as the initial starting material for inter-action with the sodium thiocyano acetate. J

(b) In accordance with the general procedure described in Example 3(b), the carbamyl compound of this example, the product of (a) supra, is converted into the N-alpha mercapto acetyl para nitraniline having the formula l rucoomsn (c) In accordance with the procedure described in Example 3(0), the mercapto compound, the product of (6) supra, is converted into the N- alpha auro mercapto acetyl para nitraniline.

(d) In accordance with the procedure described in Example 3(d), themercapto compound of this example, the product of (b)'supra, is converted into the corresponding disulfide having the formula.

'Ezvamplem I I acetyl" ortho janisi'dine having the formula (a) The N-alpha carbamyl mercapto acetyl ortho anisidine having the formula OCH:

I v NH.CO.CH .S.C O.NH2

is prepared in accordance with the generalmeth- 0d described .in Example 3(a) except that ortho anisidine is used as the initial starting material for inter-action with the sodium thiocyano acetate.

(b) In accordance withthe general procedure described in Example 3(1)), :the carbamyl compound of this example, -the;produc t of.i(a)' supra, is converted into the N-alpha mercapto acetyl ortho anisidine having the formula OCHa 11rn. c o;drr;.s11 1,; l (c) In accordance with the procedure described in Example 3(0), the mercapto: compound, the product of (b) supra, is converted into the N- alpha auro mercapto acetyl ortho anisidine.

(d) In accordance with the procedure described in Example 3 (d) the mercapto compound of this T15 exampleis; convertedinto the corresponding- ;-disulfide having, the formula i amen 2 'iBy -likeproceduresfusing the meta anisidine as the initial starting materialythere are obtained:

N -a1pha carbamyl mercapto acetyl meta anisidine having the formula i -N,-alpha;ner apt ace y m ta a disine.

N alpha auro mercapto acetyl meta anisidine N-alpha. di thio di-acetylbis meta anisidine. By -followinglthe. procedure hereinabove described-for the, conversion of the mercapto oompoundseinto the-auro mercaptides, the N-alpha mercapto acetylpara anisidine is converted into the N-alpha. auro mercapto acetyl para anisidine.

ilm o o. ems.

1 elm-a pha pro c em ptq a etyl qrt "anisidine having the formula,

is prepared from the parent thiol, the product of (1)) supra, and cupric chloride in ethanol, in accordance with the prooedure of Example 3(e). The product is a grayish green powder.

(1) The Zinc merc'aptide of N-alpha mercapto acetyl para 'anisidine having-the formula is prepared as follows: 0.01 mole (1.36 grams) of zinc chloride, ZnClz, is dissolved in 5 cc. of concentrated ammonia, and this solution is added to a solution of 0.02 mole (3.94 grams) of the parent thiol in2 0, co or concentrated ammonia. A white precipitate of the zinc mercaptide having theabove formula comes-down, and is filtered with suction onthe following day, washed well v p I Example 15 V N alpha-auromercapto acetyl ortho phenetidi'nehaving the formula (a) The N-alpha carbamy l mercapto acetyl ortho phenetidine having the formula with water and ethanol and dried .in-vacuoover phosphorus: pentoxide" to produce a white powder.

- F16 prepared cin accordance ;;.with; the general method described in Example 3 (0) except, that ortho .phenetidine ,is used :as the initial starting material for. inter-action with;the sodium; thiocyanoacetata (b) In accordance with the-generalprocedure described in Example 3 (b ),l.the carbamyl compound of this example, the product of ((1) supra, is convertedinto; the -N+alpha: mercaptov acetyl ortho phenetidine having the formula:

jC -Q m f: 2i 1 By like procedures, using meta phenetidine a the initial starting materia1;' there are obtained respectively N-alpha carbamyl mercapto acetyl meta phenetidine having the formula I IH.C0.CHg.-S.C0.NHz N-alphamercapto acetyl meta phenetidine." N-alpha auro mercapto acetyl meta phenetidine. a

N -alpha di-thio (ii-acetyl bis meta phenetidine. In accordance with the procedure hereinabove described for theconversion of themercaptocompound into the gold mercaptide, the N-alpha mercapto acetyl para, phenetidin'e is converted into the N-alpha auro mer'capto acetyl para. phenetidine. l

I Example 16'.

li-alpha auro' mercapto acetyl ortho chloro anihne having the formula- I NH.C oomsau (a) The N-alpha carbamyl mercapto acetyl ortho chloro aniline having-the formula NH.O0.CH2.S.CO.NH:

is prepared in accordance with the cue method described in Example 3(a) excegt 1215:; ortho chloro aniline is used as theinitial starting material for inter-action with the sodium thiocyano acetate. 4

(b) In accordance with the .general procedure described in Example 3(b), the carbamyl'compound of this example, the product of (0,) supra, is converted into the N-alpha mercapto acetyl ortho chloro aniline having the formula N H. C O. CHLSH (c) In accordance with the procedure described in Example 3(0) the mercapto compound, the product o'f-(b) supra, is converted into the N-alpha auro mercapto ortho chloro aniline.

(d) In accordance with the procedure described in Example 3(d) the mercapto compound of this example, the product of (b) supra, is converted into the corresponding disulfide having the formula l IH.OO.CH:.S 2

By like procedures, using the para chloro aniline as the initial starting material, there are obtained respectively N-alpha carbamyl mercapto acetyl para chloro aniline having the formula I IH.CO.CHz.S.Au

The N-alpha mercapto acetyl meta chloro aniline is prepared from the N-alpha carbamyl mercapto meta chloro aniline in accordance with the procedures hereinabove described. The N-alpha mercapto acetyl meta chloro aniline is converted to the corresponding disulfide in accordance with the procedures hereinabove described.

Example 17 Bis, N ,N alpha auro mercapto acetyl benzidine having the formula (a) The N,N alpha carbamyl mercapto acetyl benzidine having the formula 18 is prepared in accordance with theg'eneral method described in Example 3(a) except that benzidine is used as the initial starting material for inter-action with the sodium thiocyano acetate.

(b) In accordance with the general procedure described in Example 3(b), the dicarbamyl compound of this example, the product of (:1) supra, is converted into the N,N' alpha mercapto acetyl benzidine having the formula (c) In accordance with the procedure described in Example 3(a), the di mercapto. compound, the product of (b) supra, is converted into the N,N alpha auro mercapto acetyl benzidine.

Eatample 18 N,N' bis [alpha auro mercapto acetyl-l meta phenylene diamine having the formula NH.C 0.CHz.S.Au

I NIELC O.CHz.S.Au

(a) The N,N-bis-[alpha carbamyl mercapto acetyl] meta phenylene diamine having the formula I NH.CO.CHz-S.GO.NH2

is prepared in accordance with the general method described in Example 3(a) except that meta phenylene diamine is used as the initial starting material for inter-action with the sodium thiocyano acetate.

(22) In accordance with the general procedure described in Example 3(b) the carbamyl compound of this example, the product of (a) supra, is converted into the N,N bis-[alpha mercapto acetyllphenylene diamine having the formula I NH. 00. oH,.sH

(c) In accordance with the procedure described in Example 3 (c) the mercapto compound, the product of (b) supra, is converted into the N,N bis-[alpha auro mercapto acetyl] meta phenylene diamine.

I claim:

1. Compounds of the group having the type formula:

wherein X is a member of the group consisting of one equivalent of a monovalent and polyvalent heavy metals, Y is a member of the group consisting of hydrogen and NR.CO.CH2S.X in which X is defined above, and R is a member of the group consisting of hydrogen, lower alkyl and phenyl lower alkyl.

2. N-alpha, auro-mercapto acetyl ortho-amino biphenyl.

19 :3. N -a1pha-ai1ro-mercapt0 acetyl-N-methyl Number ortho-amino biphenyl. 2,270,183 4. N -a 1pha auro mercapto acetyl N -benzy1 2,384,811 para amino biphenyl. 2,412,700 5. Bis N,N alpha argento mercapto aeetyl 5 2,431,910 benzidine. 2,451,841

' ULRICH WEISS.

REFERENCES CITED Number The following references are of record in the 10 file of this patent:

UNITED STATES PATENTS Number Name Date Name Date Cook et aL Jan.13,1-9'42 Colemanet a1. Sept. 18,1945 'Weissburger et a1. Dec. 17,1946 Bloutetal Dec..2, 1947 Lewenstein Oct. 19, 1948 FOREIGN PATENTS Country Date Germany June 18, 1909 Great Britain. Aug. 5, 1943 OTHER REFERENCES Beckurtsflet aL, Jour. fur prakt. Chemie, v01. Feldt et a] Apr. 7, 1936 15 174 (neue folge 66) pages 1'72 to 193 (1902). v 

1. COMPOUNDS OF THE GROUP HAVING THE TYPE FORMULA: 